We find some websites inform riders with tips, “how-to” and information that helps answer some questions. Here are some sites that provide this. Note, if you are in doubt, seek a professionals advice.
How to choose a bike type? https://www.cyclistshub.com/how-to-choose-a-bike/
Bike size calculator https://www.cyclistshub.com/bike-size-chart/
Best apps for cyclists https://www.cyclistshub.com/best-apps-for-cyclists/
Benefits of cycling https://www.cyclistshub.com/benefits-of-cycling/