hi i would like to know or learn more about painting model stoam strooper too ?

Your best bet is Youtube. Try some of these for Stormtroopers.

https://www.youtube.com/watch?v=5t5EyqJMxCI&ab_channel=DuncanRhodesPaintingAcademy

https://www.youtube.com/watch?v=9F1u_X_mJsA&ab_channel=Zorpazorp

https://www.youtube.com/watch?v=c88zxF_MeRE&ab_channel=ThePrefect

And for basing

https://www.youtube.com/watch?v=1w5FcCJFCGw&t=516s&ab_channel=DarrenLathamMiniaturePainting

https://www.youtube.com/watch?v=YQik48B_M0w&t=249s&ab_channel=TheApatheticFishMiniatures

If you look on youtube you should be able to find plenty of videos to help. :)