Since I found the englishpage.com yesterday, I started to learn tenses.

Today, I'm learning belowthe following 4 tenses.:

At 3 PM today's 3 PM, I was learning tenses.

I Learned 4 tenses today.

You can capitalize it as either "I Learned 4 Tenses Today" or "I learned 4 tenses today", but you shouldn't mix capitalization. The first version is the more correct version (titles are always capitalized) but since this is social media it doesn't really matter.

Since I found the englishpage.com yesterday, I started to learn tenses.

Today, I'm learning below 4 tenses.:

You don't need to add "below" if you have a colon because then we can assume that there will be a list following it. If you wanted to add "below" anyways you could say something like "Today, I'm learning 4 tenses. Listed below:"

1. sSimple present:

Theis website is so great.

You'd say "this" because you're referring to where you are right now.

2. pPresent continuous:

3. sSimple past:

yYesterday, I found theis website.

4. pPast continuous:

At tToday's at 3 PM, I was learning tenses.