Are Revision Guides Really Worth It?

Hey my names George im 17 and i just started college and this channel. I made this channel to help out others.
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Instagram- George_Branch
Twitter - @Georgeuk2000
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This is me pretty much explain my view on all the GCSE study guides and really what ones are a waist and what ones are not. Also offering alternatives for most as they do rack up to be quite expensive which can be annoying for children such as myself who had to pay all of them themselves.
Any Questions DM me on instagram that is listed abov.
Have a great day.