All I know about deleting posts is you can edit them, there might be a delete function, not sure tho :/
You spawn in a pub match with 40K cbills, this is enough to get you started.
Comma opens the buy menu, but you have to be in the hangar.
For brawling, the best choice is either Owens D or Uller B
Mid range Osiris Prime Or Osiris C
For a sniper role there is the Osiris E (Do not look to brawl in this mech, you'll get wrecked)
The easiest way to enter a mech is to use the shelf in the hangar, just sprint (L Shift) onto your mech while pressing F and looking at it
Stay away from the legs, they will kill you (Its a feature)