(Was that the bartender to me?)

Of course, how could be otherwise. "3 golds should jog your memory. And if information is good, 3 more will await you."

 "So, nice looking fellow, blond, well dressed human. Two days ago he was here"

Gimble says thanks and promises to be back and darts off after the others.  After catching up...

"Sorry for the distraction guys.  Wow, look at this place.  What have you determined so far? I think that shop owner may know something about those murders too.  Man I'm thirsty, can I have an ale please?"

Jonas, Yes

Gimble, The Bartender gets you an ale

Kieran, (Damn, you filled in both of the two different ways you could get him to talk!) "Well, I wasn't really paying attention as I was making ale for everyone, I'll let the others tell you"

Several of the regulars remember seeing Volo and Floon drinking together a couple of nights ago. After Volo left, Floon stuck around long enough to meet with another friend: Renaer Neverember, the son of Waterdeep’s previous Open Lord, Dagult Neverember. “Chip off the old block, that one!” sneers one patron. “Just another spoiled, rich noble who likes to rub our noses in it!” says another.

The two drank and played a few rounds of Three-Dragon Ante before leaving around midnight. Five men followed them out, and no one in the tavern knows what happened after that. The men who left shortly after Floon and Renaer haven’t returned to the tavern since, but they’re known to frequent a warehouse on Candle Lane. “Look for the snake symbol on the door,” says one of the tavern regulars.

Jonas puts a gold on the bar. Looking at the regulars who talked "Thanks for the information,  have a drink on me."

"If you wish to get the star friend I can find out if it has any special properties later on, however Mr.Shopkeeper I would like to know if ya's got any info on some blonde human that may have been around here lately." Lassodon says as he pulls his hand out with three coins between his fingers, placing them on the counter

"Thanks Lassodon!"

"So you guys want to move in the direction of this warehouse?"

"It seems like our only real lead from here. I'm ready." Jonas finishes his drink and stands to leave. 

Gimble follows suite.  "Barkeep, could you please point us in the direction of this warehouse?"

Main Party, "Alright" *Points to the Warehouse* 

Gloom envelops a narrow alley as dark as a dungeon — and as odorous as one, too. Nearly all the streetlamps have been smashed. The only light that pierces the darkness is a faint flickering from down the lane, like a distant candle.

Lassodon, "Hmm, well, I think I've seen him, I think he was also with another person of similar, well-dressed appearance and bearing, were jumped outside the shop by rough-looking men in black leather armor. I think there were five attackers, but none of them looked familiar. One of them had a black tattoo of a winged snake on his neck."

"So to the warehouse?  I'm not exceptionally sneaky but I don't think we should make a grand entrance.  Let's be subtle."

Jonas stands to leave. On the walk he will show the party the cube he bought and see if they know what it is. 

I guess we are going inside.

(Alright) The door, a large warehouse loading door and a painted over window are both locked though it does seem that the door has something of a peephole, though you can't open it

" Does anyone want to check out around the building before we go in?"

 Well the group walks up to the door Gimble looks around curiously to see if he notices anything standing out that is unusual. 

(can someone please explain to me how to roll for a perception check and/or using my dark vision)

"Might be a side entrance or window. "

Darkvision just means you can see in the dark, for perception click the dice button and add your perception mod, also, on the door is a Black Winged Snake

Perception 18 Jonas looks around the sides of the building. 

Kieran checks doors and windows for a possibility to be opened and for traps: Perception 18 Investigation 19

You could probably open the door with a lockpick, though the door also looks like it's weak enough to be broken down with a forceful kick or other attack, there seem to be no traps