Pointers:
-Chill out, relax, take it slow.
-Plan ahead, make a checklist of what you need to do, and when you need to do it. That way you make sure you clean everything, you add all your ingredients in the right amount at the right time, you don't forget a hop addition, that kind of stuff.
-Make sure you're cleaning and sanitizing everything.
-Make sure you're pitching enough yeast for your brew:
http://www.mrmalty.com/calc/calc.html
-Make sure you're controlling your fermentation temperature. Search for "swamp cooler" on here and you'll find a bunch of cheap and easy methods to keep your fermentation at the right temp.
-And last, be patient. Let the yeast do their job. It's really tempting to start messing with your beer, especially on your first one. Patience is a big part of making great beer. Let it ferment for at least 2-3 weeks, and then make sure to let it sit in the bottle for a full 3 weeks, then at least another few days in the fridge. The biggest issue with most new brewer's concerns is they're not being patient enough.
As for cleaning and sanitizing, anything that will touch your wort before the boil should be cleaned, but doesn't have to be sanitized (as the boil will do the sanitizing). Anything that touches your wort after the boil needs to be cleaned AND THEN sanitized. If there's any sort of dirt or grime on anything, bacteria will be hiding in it, and if you sanitize without cleaning you're likely not going to kill it all. There's some one step cleaner/sanitizers out there, but I prefer to just soak in PBW (some on here use unscented oxyclean) and then sanitize with StarSan.
What will you be sanitizing with? If I recall correctly, bleach-based sanitizers might be usable as one-step cleaner/sanitizers.
The best advice is to look at the stickies in the beginners section, and the equipment and sanitization section. And also skim through the main threads in any given section they're going to be the most pertinant discussions. Most everything is covered repeatedly on here. 
