Lectures to attend

Astronomy lecture series by Michel van Biezen.

Astrophysics lecture by Studynova.

watch Bob Trenwith. (recommend to watch Bob Trenwith lecture after attending Michel van
Biezen lecture. Then your basics will be fully cleared and no need to watch more.)

Use a channel called Orbital dynamics

Also make notes of it. It will help you further.
Reference Books
Read ncert grade 11 and 12 chapters class 11- (2,5,6,7,8,10) and class 12-(6,7,9)

Read ncert class 11 math units-(3,10,11,13,15,16)

Mainly Mechanics, Optics, Heat & Thermodynamics, Modern Physics and Wave Optics
and black body radiation..use HC Verma.

Basic mathematics for astronomy by R micheal raymond

Physics for scientists and engineers with modern physics by Raymond A.Serway and john
W.Jewett

Spherical trigonometry is must to know. Here you will come to know about our Celestial sphere
and Earth. For this I would recommend to read second chapter of W.M Smart. Link to the book
is here.

Fundamental of Astronomy Springer publication

Introduction to Modern Astrophysics rather this books is very depth.

Finish class 11 and 12 form jee module and focus on integration and
differentiation,conics,LCD from said modules

For Advance problem solving Astrophysics by Aniket sule.
Past paper of IAO, IOAA, Russian open school Astronomy Olympiad or Indian National Astronomy
Olympiad.
Websites Stellarium software for night sky observations. Stellarium Astronomy Software
Sky chart provided by IAU IAU_constellations_5x7.pdf