As a froob sometimes it can be hard to find a decent, easy to get and cheap weapon. However that isn’t always the case.
From any fair trade store in the weapons terminal there are weapons known as the 000 weapons ranging from quality level 1 - 300. When they were first introduced, they were upgradable 4 times, however it has since been made easier and Fair Trade stores sell them in their 2nd most upgraded state.
In the tradeskill department of a Fair Trade store you can buy a ranged/melee weapons adjustment kit (close to the ql of the weapon you want to upgrade) that upgrades them to their final state. These weapons are great for new froob players for almost every profession at one point or another (I’m using one on my lvl 60 trader and my lvl 100 trader)