Hi, Troy here 🙂
Welcome to the list of sites i can recomend from experience, this is an independent method with out signing to a label a great way too bolster your careear in music and the earlier the better. Alot of people may not tell you these things without a signature and a team. Obviously, AI is on the rise and could short change just about everyone, but it lacks a certain warmth of individual effort, plus we like work, we always have!....
soundcloud.com - Host your music
repostexchange.com - get noticed by other people like yourself
youlikehits.com - another form of PR you can do for fun
freevstplugins.com - a site dedicated for free vsts and free only!
loopcloud.com - keeps you in the loop with new samples for relevancy; has a good UI
studio.youtube.com - Make content videos and share online
photopea.com - make album art work (free PhotoShop open-source)
cymatics.fm - thousands of free samples and a few nifty VSTs (worth the sub)
emastered.com - great for a finishing touch (once youve done the hard part) [optional]
canva.com - good for leaflets and more..
1001freefonts.com - great for customizing; event, albums, logos - font text
spreadshirt.com - make custom clothing
pixabay.com - Free open source content with a huge libary
image-line.com - fruity loops studio (free trial.../ producers bundle considered fravourite bundle purchase)
audacityteam.org - great for podcasts, and live mic (basic UI)
slooply.com - some samples that are free
musicradar.com/computermusic - The magazine has a free sample disk and productuion tips (online DL archive)
I will add more if i come across any in the future.
Enjoy 😅