If you've ever been exploring, before, you know everything, just this time pack a hangar and couple of SRVs with you.

hangars come in even classes (2, 4 and 6) and can house 1, 2 or 4 SRVs respectively. (And yes, it's better to have more than one SRV)
If you're going to do it in Anaconda, though, I'd highly recommend strong thrusters, instead of light ones, like most explorers do.
When you are nearing the planet, one of the most important numbers on the HUD is at the bottom right - G-meter.
Up to 3g planets you'll be fine, above that, you will have to be careful.
Another thing is that you should always have at least "some" shields. Without shields it's virtually impossible to land without damage. Might be minor, but adds up on longer trips.
Once down on the surface, and after you get your bearings, one of the first things you should do, is to look at the synthesis and write down materials that you'll need for SRV refuel and repairs. SRVs fuel tank lasts about an hour (up to two if you're saving fuel) so it's better to start collecting rocks right away. (And it's batter to do that in the bubble BEFORE you head into unknown.
Wave scanner can give you lots of useful info. There was a thread about it and all the signals it gives and what they mean. I'll try to find it.
Anyway, it would be a good idea to stay in the bubble a few more days and experiment with some cheaper ship and get to know what's what.
