I need someone to show me the ropes, I always lose at the start and give up.
1) Abilities > Equipment > Levels. In fact, over-leveling is the number one cause of pain in this game, as random battles (and some story) scale to level, even though your available equipment (to raise stats) does not.
2) The two basic jobs, Squire and Chemist, have some great abilities that can carry you through the game. From Squire, pick up Gained JP Up to earn JP faster (quicker to get skills and new jobs) and Move+1 (highly useful for pretty much everyone).
From Chemist, pick up Potion, Phoenix Down, and the reaction Auto-Potion. AP will save you many, many times.
3) When fighting, check the % shown. Rear attacks are best, then side. Avoid front attacks if possible. Zodiac signs affect damage dealt and success rates for some spells, so don't just mash the OK button. It is a tactics game, after all.