Today I’m going to present you a great and very useful webpage:
If you are an English learner, you will celebrate this discovery. Well, you could say that it’s only an online dictionary. But it has a lot of virtues. Firstly, it’s fast. It doesn’t seem important if you only want to do one search: but if you are looking up lots of words, you won’t have to wait a lot between searches. Secondly, it’s absolutely complete: in the entry of each word, you will find its translation (English-Spanish & Spanish-English), links to similar words, grammar instructions, a list of common uses for that word… Finally, and I think that this is its best quality, it has a big community of registered users; so you can ask your doubts to other users and help people with theirs…
Believe me, I cannot live without this tool; and I am sure that you will find it very useful!

CORRECTION:
1-celebrate+noun/pronoun: celegrate this/celebrate this discovery
2-searches
3-and I think that this is its…
4-theirs(no apostrophe and no inverted commas either)
Very good