Oh hi and welcome InterDimensionalOwl, seen you on the leaderboards for a while (hard to miss
)
The manual is actually not the place to look for all the commands, since it only includes a key-based list, rather than a complete list by function. Instead, in game when you open the game menu (F1 or ?), press '2' to go to the advanced commands, and everything you need will be right there. Anything dealing with part manipulation can be found in the relevant windows, so check out what's listed in the Parts and Inventory list area. There are multiple ways to attach parts
(Keyboard is definitely faster--lots of us just use that!)
...Oh, you edited while I was replying:
I also am struggling to understand the look command. In keyboard mode it states the movement key move the cursor, this doesn't happen for me
That's because you're not in look/examine mode, which you'll probably be familiar with from other roguelikes. You have to activate it with 'x'. Otherwise naturally movement keys are going to move yourself--how else would it differentiate between the two?
("keyboard mode" and "examine mode" are not the same thing--the former just hides the mouse cursor and activates certain other keyboard features.)