Howdy mitsuman47 and welcome to CPF,
Yes, this site can be a bit overwhelming when you first arrive, so take a deep breath and relax. By taking your time and doing a bit of reading I'm sure you'll find the right light.
The way I approach a task like yours is to start with the process of elimination. By making a list of the important features you want, you'll be able to quickly narrow the field down to just a few potential candidates.
Do you want a floody beam or more of a narrow spot like beam, or a general purpose beam? Is the light for around camp or spotting animals?
You'll have a choice of body materials.... aluminum generally being the lightest and least expensive, with stainless steel being more durable.. but heavier and more costly.
Is size important? Is price important? Is the color of the light coming from the LED important (tint)? Many folks who are using their lights outdoors find they prefer a warmer tint, so that's something to consider.
Be sure and check this page out..... it will help you understand the language we use to discuss lights better:
http://www.candlepowerforums.com/vb/showthread.php?277224-The-Welcome-Mat-a-FAQ
Also, be sure and make use of the Google Search feature at the top left of most pages. Just leave it checked to search CPF only and it will narrow your searches to only relevant CPF posts.... a VERY handy feature.
We have an excellent review area here at CPF as well..... and some of our members are outstanding reviewers. Also check out this site:
http://www.light-reviews.com/
If you have any questions about rechargeable batteries, this is the place:
http://batteryuniversity.com/
We also recommend that folks consider having AT LEAST two lights. First, it's hard to find one light that will cover every situation, and second, things happen and one light could go out (even very rugged lights sometimes fail), so it's better to be prepared with a backup.
You'll get lots of good recommendations here, but remember it's up to YOU to do the research and find the light, or lights, that fit YOUR needs.
So, don't be in a hurry. Spend some time browsing CPF for a few weeks and pretty soon you'll begin to see which lights will work best for you.
Have fun!