As i was working on the "Make a B&B icon" tuto, i just could not figure out how to get that pen tool to work right, to get the clean line like in the photo.

are there tutorials on this tool?

There are actually 2 tutorials about this tool, but they are in french

First tutorial (by k-net)

Second tutorial (by Tet_de_champ)

Actually, working with the Pen Tool in Photoshop is an easy task.
SO here I'll give you a quick tutorial about how to create that path in creating B&B icons by k-millio.

First, select the 'Pen tool' from the toolbar.

And make sure to select the 'Path' option from the Options window

Then first of all you need to create a starting point tostart your path. so click on a point like a in your design model

(it doesn't matter whether the point is over the Canvas since what is important here is
the part of the path which go over the layers)

After you've created the starting point move your mouse to a place like b in the window and click. But don't release the left-mouce button!!
After you click on point b, click and drag the mouse point till you see the curve is like this.
( Tip:*follow the direction of the silver arrow )

Note:*dragging after creating an anchor point with Pen tool will curve the area between the last two points

Then, click on a point like c and curve the line between b & c
(Here, move the mouse pointer to the direction given by the red arrow)

Then the path is already completed for the B&B icon. But to make a selection you need to complete the loop as a shape (to select an amount of pixels)

So just make some points in places like d, e,& f to avoid the path from running over the picture layers twice. then Finally overclick on point a to close the spine.

Now your path is completely finished and all you need to do is to make the selection. K-millio's tutorial will guide you through the rest of the designing.
When you delete the selected area of the White to Transparent gradient layer (probably Layer 3) The design will look like this

Note:*This may not seem like the original path but my idea was to give the instructions in creating such

Edit:* And after you've completly followed this tutorial you can improve your skills by creating your own B&B icons like this done by me (after writing your tutorial)

This is great Neil  Thanks so much. gona go try it now

Your mini-fast-nice-tutorial is awesome , very good job neil , perfecto  

Neil you are da'man! thanks so much bud!

heres my Icon

nice job neil once again

Phactor you have a nice result

Thank you all for the appreciation Azzurra & ZaKaR

And Phactor, Nice work Didn't I tell you that you can improve your skills after the tutorial  K-millio's (he's reading this right now )

Awsome Tutorial Neil!

Exactly what i needed! Thanks once again!

You're Welcome de lioncourt and I'm looking forward to se your result in the releventy thread

+ 1

another one Neil wow
nice job

Thanks Y$F

Nice summary Y$F