Enjoy it first of all, the Ventoux is breathtaking which ever side you go up and the fact you can see it for miles around, makes it a very mythical place. Still have shivers down my spine everytime I think about riding past Tom's memorial.
Remember this is a climb that deserves a lot of respect, don't underestimate how difficult it is. If you go up from Bedoin, you'll be tempted to blast it from the village along the false flat that takes you to the St Esteve hairpin as it's pretty easy... A word of advice,don't! The real climb begins at St Esteve as you swing left and enter the forest. Don't worry if lots of people overtake you on that first stretch, because if you're clever, you'll pick them off one by one as the climb proper begins. If it's your first time up, you really do need to pace yourself and save as much energy as you can, whenever you can. Try to recover when you get to Chalet Renard, remember there is still 6km to go and it's very hard. The last corner to the top is horribly steep, but when you get to the top you'll feel fantastic.
Climbing from Malaucene is just as hard, less exposed to the wind, but you're more likely to be on your own. Never climbed from Sault. Either way you come down, be careful, the descent is very fast, and i've had one or two hairy moments. For gearing, a 34x25 is not over cautious by a long way. Weatherwise, if you can't see the top, forget it until the next day.
But most of all enjoy the place and enjoy every minute of the climb, it's a very, very special mountain.