So just hit lvl 40 and 200 light lvl, so what now? Do I need better gear for raids?
You should be able to pick up new quests from people in the tower and the reef to get legendary marks and legendary gear, you'll progressively get better rewards to increase your light level. The standard strike playlist (level 36 requirement, not sure that works with light level) should get you plenty blue engrams to increase your light level and if you stay in the playlist you get an increased chance of getting better rewards. The daily heroic story missions are 240 light, this is a random story mission each day that guarantees you 15 legendary marks which you can buy legendary level 280 items with. The Heroic strikes are the same as the normal ones but are slightly tougher at light level 260, the first three runs give legendary marks and the first run guarantees a legendary engram.
The top strike is the Nightfall which is level 280 which has five difficulty modifiers, you can only do this once per character per week (maximum of three per week if you have three characters). The rewards are random but can include high level legendary items, an exotic item or others like strange coins/three of coins.
Once you've done all that including the main quest lines (some of the latter ones give guaranteed high level rewards like a 290 exotic scout rifle and a 300 fusion rifle or shotgun) you should be 290+ and ready for the normal mode raid.
Although there's no activity that guarantees strange coins, you should get a fair amount of them along the way which you can use to buy a 280 light level exotic from Xur who is a vendor that comes from Friday to Sunday. You can only equip one exotic at a time but it's a good chance to get a guaranteed boost on what you have.