Hello.
My name is Hector Papadopoulos and I am a beginner Illustrator.
Please,I would like to ask one question.
Concerning this website(www.dafont.com),how can I search,find and install free opentype fonts?.
I would be really grateful if somebody could tell me precisely and adequately the exact procedure in accordance with which I can search,find and install free opentype fonts as soon as possible.
Thank you very much in advance.

Hello Hector, welcome !

First, click on the theme you like.
From here, you can search for free fonts by clicking on the "More Options" link, then tick the "100% free" checkbox.
Click on the Submit button, and you're done.

TTF and OTF files will be displayed together, i'm afraid there's no filter for file format.
You have to click on the font page to view its extension.

Thank you very much for your precious help and for your instant reply!
I really appreciate it!

You're welcome !