For OP and anyone new to this game and wanting to start, please know the first 2 to 3 missions are the least fun throughout! You just need to persevere through them until your character and your team gets enough skill points to be competent.
I have written tips about this game some while ago, please go and read them (all 4 of my comments under that post):
The most important thing I recommend for newbies is point #2 I mentioned in above posts(aka walls of texts) - to get some "special encounters" after mission1 by visiting those same map squares as the youtube mentioned, in order to get the FN-FAL, Pancor Jackhammers, and some Guns and bullets. To do that, you'll need Stitch to put all skill points gained from mission 1 into Barter, and Farsight to put all her points into Outdoorsman until 100, and also bring Rage along with all his skills in pickpocket. If you manage to get those items, Mission 2 onwards should be quite pleasant!
And the 2nd most important thing is to know about the "Burst hit bug" - With burst weapons, if the shots did not hit the intended target, the bug makes those shots highly likely to hit nearby creatures, even if mouse-over says 0% for all of them! This has a serious implication to gameplay: Never bunch up your squad! You'll find they drop like flies if you do. In fact, solo-ing with a burst weapon is often MUCH better than all 6 guys standing together regardless if they're using burst or single shot weapons, crouching or belly flopping. Save-scum a lot and only bring in additional people into fights if they can stand very far apart, or insufficient firepower forced you to risk it. Oh, and your main (with proper build) is the only playable character in this game to be able to do useful damage. All other characters are spec'ed so poorly they'll at best only do like half of your main's damage if you try very hard to develop them. And you DO need to min-max your main character to have an enjoyable 1st playthrough.
The 3rd thing is about the "recruit pool exp bug" that I've written as point #7. Not going to repeat it here.
And finally, please know that you can change the keyboard shortcuts:
Ah, Another wall of text! Please, enjoy this gem!