How could l best invest $100 a week ?

Something exploding, seems like you want instantaneous win, so perhaps gambling like lotto (only kidding though!).
Be clear on what you invest into, what you want to achieve, and whether you can get out your capital, no one else can make that decision for you, only you, but action is they key.
'THE MAJOR KET TO YOUR BETTER FUTURE IS YOU!' by JR.
'If someone is going down the wrong road, he doesn’t need motivation to speed him up. What he needs is education to turn him around.' by JR.
Also if $100/week is generated from IP why not reinvest and do what worked for you in the past?

 

Because this melts the snowball. You get **** poor return on capital paying down debt and the tax savings are negligible Paying down debt doesnt mean you can get more debt and kind of pointless just so you can borrow it again . Growing your net assets and cash flow should be the aim You need sevicability. Many people have found the opposite especailly those who dont have a job. If the $100/ week was put in even a relative low risk but very sound company with relatively modest returns such as OKTA as suggested compounding would have returned about 5k by now with 12k continuing to grow and compound gains , paying down loan would have retuned 3% for an average of 8 months on 7k about $200,. and given limited liquidity and limited funds available for opportunities Your $ 200h as very high opporttunity cost. Also an Equity loan can be taken out against shares if you want to get tax deduction for interest. You can pay down debt much faster if you have chunks of quickly earned cash to pay it down when you want a loan. If you have cash you dont need a loan or you can buy asetts to borrow against. It is crazy buying an investment that takes 30 years to pay off. The old metrics of only paying what you can earn from an asett in 5 years maybe hard to achieve now but I think you should keep it under 10 years..

 

I'm a bit late to this party but with regard to the original question, conduct your own experiment:

I'm conducting some research on Bitcoin [Crypto]

I'm conducting some research on stock micro investing [International]

The knowledge I gained from these two experiments was fantastic. I now have more confidence in my investing decisions having broken it down to such a simple and basic format.

We live in an era where investing is easy with small amounts, make full use of it.

 

And what was that stock that you ended up not buying because of a spike? I would love to see it's performance since then.