Hi guys, first post here so forgive me if I am being too dumb asking this.

The thing is, I just LOVED how the dnd beyond works, especially the app where I can manage all aspects of my char. I am starting a campaign and willing to buy the players handbook to have access to all content (especially all spells in a neat and efficient way through the app). The thing is, if I buy it, will my players be able to include, manage and use the content (like additional spells, feats and sub-classes) that are available to me?

Let me be clear, I do not wish all my players to have unlimited access to the book, I just want them to be able to add the spells and stuff via app to the characters they are currently playing in my campaign. Will the app understand that their characters are inside a campaign of a DM that owns the PHB and allow them to, e.g. , be a forest gnome, or add a witch bolt as a spell to their wizard?

Thanks a lot guy =)

I believe someone in your campaign would need a Master Tier subscription and to enable Content Sharing on the campaign in order for them to have access. Then they'll be able to access all your purchased content as if they own it themselves and if someone buys something in future then you'd be able to access that too. 

This is the main benefit of the Master tier subscription.

One person in the campaign needs to have the master subscription. On the campaign page they will have a button that says "Enable Content Sharing".

Once enabled, every book that anyone in the campaign has will be shared with everyone in the campaign.

The DM of the campaign can then turn off sources that are shared, which is useful if you are running a premade adventure.