Weapons cannot be "leveled up" in TF2
if you've got the Xbox version you cannot get more weapons. however if you've downloaded it off steam you can pick them up. to download steam make a account and download tf2 its free. hope my answer helps.
if you want to get the scout weapons eg. do achevments
Strange weapons are obtained from unboxable crates.
No you cannot trade weapons for beta tf2 to normal tf2. Beta Tf2 is considered to be a completely different game by steam. Therefore the two game's inventories are not compatible.
Nope, everything on your profile for TF2 (backpack/controls etc...) is kept online.
no
download them from garrysmod.org
easy, touch it
Nope, sorry.
Press the circle button near a weapon to pick it up.
press the key a