Reddit is a massive collection of links. A thousand links are submitted every day. Everybody has an opportunity to vote up or down on each link.
Most people go just to the home page and they see just the links that have gotten the most upvotes that day.
reddit is also broken down into "subreddits". Some subreddits you might be interested in include:
permaculture homesteading renewable energy self sufficiency Since these have less traffic, you can see a list that of things that have been the most popular for the last week or two. Things that are newer and more popular are near the top. Things that are older or less popular scroll to the bottom.
Eventually, you might want to submit something to reddit. Keep in mind that spammers want to submit things to reddit too, so your first submission might get caught in the spam filter. If that happens, click on "message the moderators", explain that your submission didn't show up and maybe it is in the spam filter. After you have done this a few times, the spam filter "learns" that you are trustworthy.
If you picked a good title and a good link, you could get a hundred upvotes. And the link might get a few thousand views.