New player PLEASE HELP I NEED concencus

Ok, I want to build a very specific character BUT when I try finding answers no one has specifically talked about this. I am in fact new and I just want to make sure I am RAW and not just interperiting my own feelings. Please if you can take the time to read this through and tell me if I'm right,  wrong , specific points I miss, legacy rules not updated I might not have known anything like that  .

 from my own reading of the 2025 and 2014 5e PHB Wizards should be able to pick any 2 spells they want so long as they have spell slots for them. It says those exact words explicitly. BUT any time I try to verify they always reference a separate feature of the wizard class. The feature they always reference is the Copy a Spell Into Your Book. In the Wizard class it very specifically states that "the spells you add to your spell book as you gain levels reflect your ongoing research, BUTTTT you might find other spellbooks in your adventures..." This is the Copying a spell into the book. Spellbooks found can be copied ONLY if it's a level you can prepare. It states the same exact perimeters in the 2014 5e except it goes on to continue to state that the spells you add to your spellbook are intellectual break throughs you have had about the nature of the multi verse. They are not found in a dusty spell scroll. The level one feature simply stated any level gained after 1 can be ANY 2 spells. And then states " each of these spells must be a level for which you have spell slots, as shown in wizard feature table" the issue is if I am dipping into wizard I will have spell slots higher than what the wizard feature table shows. This is because 5.5e(2024) and 5e (2014) very specifically states as a multiclass character you get the level 1 features and to see the rules of multiclassing to determine my spell slots. According to multiclass rules the only time you don't use the specific multiclass formula for spell slots is if you only possess 1 spellcaster class or the warlock which is completely separate. This then overrides the wizard feature spell table. Now the reason why I do furvantly think that it truly means any spell is because when you take a wizard subclass, basically any wizard subclass in 5.5e it gives you 2 free spells from that specific school of magic and specifically gives them a level 2 spell slot limit. Also In the feature 1 ("prepared spells of level 1+) it specifically states "to pick 4 spells from your spellbook. The 4 chosen spells from the spellbook must be of a level you have spell slots for" maybe I'm reading my own feelings but they are telling us specifically what we Can't pick. Which is our spells of a higher level spell slot from our spell book. 

Now the big thing with this is I very specifically am dipping into the wizard class because of the Ritual Adept Feat. This allows my character to cast ANY spell that has a ritual tag and it's in my spellbook. Normally for a Ritual to be performed, even if it doesnt cost a spell slot according to the spell casting rules any ritual spell MUST be prepared in order to be cast. HOWEVER the Ritual Adept allows the wizard to bypass this and states that they needn't have the spell prepared. That is a direct quote. "You needn't have the spell prepared". So long as it is in your spellbook BUT you must read from the book to cast a spell this way. This essentially means so long as I have a high level spell slot from another spellcaster, I can put 2 ritual spells into my spellbook of that spell slot. And even though I'll NEVER be able to prepare them because prepared spells are tracked separately as 2 distinct classes, I am still able to cast them without using my spell slot, by simply reading them from my book. Giving me access to these high level ritual spells at any time so long as I am able to complete them successfully. 

The other thing with that  is the Copying the Book vs Copying a spell INTO the Book. They are 2 separate actions you can use with your spellbook. And again in neither 5.5e nor 5e does Copying the Book section state ANY prerequisites. It does not say that you must be able to prepare the spell. Only when you are Coping a spell INTO the Book. The only time you must find new spells to fill out your book is if you don't possess a copy of it in which you can only copy the spells you currently have prepared. 

Please anybody who has taken the time to read all this, it's a lot. Let me know if I am totally wrong or missing some key points here. I am a very RAW kinda guy. The 5.5e seems very streamlined in that direction with the changes made to specific rules such as the 1 spell slot per turn. If I am wrong please let me know where I went wrong. What am I not getting, I'm very new but very excited about this new experience im having if you could help me out appreciate you

It's a little hard to parse this, but it sounds like you're asking about what level the new spells you gain from gaining a level of Wizard can be?

The intent is that these spells need to be of a level that you could cast if you just had your Wizard levels and not any levels from other classes. For instance, if you're have 3 levels of Wizard, they can be either level 1 or level 2 spells. They can't be a level higher than that, even if you have higher level spell slots because you have levels in another spellcasting class. 

I think they're asking about copying non-wizard spells (the character is multiclassed) into their wizard spellbook so they can use their wizard dip to ritual cast high-level ritual spells from the other class. 

The problem with this is that the 'Copying a Spell into the Book' section specifically says "When you find a level 1+ Wizard spell, you can copy it into your spellbook if it’s of a level you can prepare." You can only put wizard spells in your spellbook, and can only put in spells of a level you can prepare as a wizard. They're not writing every instruction for every class feature in the entire handbook as if it were applying to a multiclass PC. 

If you just want your cleric to be able to ritual cast their ritual spells without preparing them, maybe ask your DM if you can use the old version of the ritual caster feat instead?  

I’m at work and so of limited help, but if you read the “multi class character” section there is a bit about preparing spells as if you were a single class character. 

When your wizard class gains a level after 1. Can you pick any 2 spells do long as you have the spell slots for them

As long as they're on the Wizard spell list, and if you're a multiclass, you'd have the right spell slot if you don't factor in your other classes. For example, if you have 4 levels in wizard and 5 in cleric, and gain your 5th wizard level, you can only add wizard spells of 3rd level or lower to your spellbook.

Quote from tlicea132 >>

When your wizard class gains a level after 1. Can you pick any 2 spells do long as you have the spell slots for them

As I said above, you determine that based on the spell slots you would have if you only had your Wizard levels and not any levels in any other classes.