Beth, congratulations on your conversion! :lol:
To try to help with your chem questions:
Most of us do not use an algaecide and rarely need to shock a pool!
Maintaining your pool's balance will make those unnecessary........usually! So, forget about shocking and algaecide for now.
As Jason said, you need to:
1. Increase your CYA to between 30 & 50. If you want to use the tabs with the CYA for this, that is fine. It will add CYA, only much slower. If this is your only source of CYA, I would test it again in a month or so to see where you are.
2. Maintain your pH as ususal between 7.2 & 7.6 - ish
3. Maintain a proper FC level. You may need to manually add some liquid chlorine ( 6% bleach - unscented) to supplement the inline feeder. (I have very limited experience with the inline feeder since this is the first time we have used it. We do, however, try to keep about 6 tabs in there. Our setting is on '4', and we only run our pump/ filter about 6 hrs per day. Don't know if that is right or wrong, but it is working for us.

)
4. Adjust your TA and CH to your target levels. (Use baking soda to increase your TA and use Calcium Increaser to raise CH) You can buy baking soda anywhere, & the CH increaser can be found at WallyWorld, Lowes, HD, pool store, etc.)
REMEMBER to add less than your target so that you do not overshoot
Once you have your TA & CH within range, you only need to test those about once per month.
After you have your water balanced (all except for the CYA if you are depending on the tabs) your DAILY maintenance should be testing and adjusting your FC and pH!
Hope this helps. Great job, Beth. Feel free to post back any questions you have. Folks are here to help you :lol: