Come on, the game isn't that hard and the AI that bad.
Here are some tips if you start from scratch :
1. Install the v1.2.2 patch availlable here
http://www.matrixgames.com/forums/tt.asp?forumid=28This will increase the starting dev points of your rookies and will reduce salary. Lots of other fixes/improvements. A must have !
Also install the v1.2.2 database, available in the same thread.
2. The first jock created will be your leader. Just increase his leadership to 50+ before hiring another jock
3. Hire the second jock. He will be the manager of the squad. Just increase his business skill to 50+
4. Hire a third jock. He will be the mechanic. Just increase his damage control skill to 50+
5. Increase recon/light piloting skill of all jocks to 50+. Now look at the starting weapons skills of the three jocks and increase a SINGLE weapon skill to at least 55+ for each of them. Just specialize, don't spread your points at the start. The only other weapon skill needed is close combat. It is good to have since you are fighting fast recons and your skills are weak at gamestart.
6. Now buy 3 recon titans which do match the weapon skills and allocate them accordingly.
7. If one of these titans has jump capabilities try to raise the jump skill of the pilot accordingly.
8. Important 'other' skills for rookies are scanner and a bit of electronic warefare and survival.
Try to raise scanner to 50 if possible.
9. Try to take all jocks to battles. Those at home still cost you money. Balance the first battle to your favor by reducing the weight of you opposition in battle setup. Get a feeling for the battle mechanics. Don't feel ashamed to fight against lower ranked AI later on by a level or two.
10. Read the manual. If you are interested in more details read the guide, also availlable at the forum link under 1.
11. Guided missiles are very good versus fast recon as long as you can keep the distance. Lots of weapons have a minimal range.
12. You will lose a jock here and there but it is possible to raise a squad to high experience levels. You can clone jocks with v1.2.2
13. You can take an AI controlled allied squad to battle, using them as a shield and fighting in support.
Have fun !