Hey there,Can you please suggest me ,Are there any platforms provides free mock tests or test series and also best lectures on YouTube and books ?? please suggest me guys my humble request to you.....
You didn't tell for which exams or course you want material online. However I'm telling you some top online platforms for preparation for various exams:
Wifistudy for lectures
Adda24/7 for test series and lectures
Testbook for test series
Gradeup for test series
Oliveboard for test series