I will do this a step at a time.....I hear you on being crowd blind. It IS a lot of info.
Here is a chart on TFP recommended levels for each pool type. Please note this will NOT match the pool store and most pool builders as they are still using the old standards.
Pool School - Recommended Levels
TFP used science to come up with our levels. We have all of the tests and articles in links if you want to read them. Also know that all of this has been daily tested in THOUSANDS of pools (including mine LOL). We are always finding different and better ways to do stuff.
On example is the CYA(stabilizer). The bottle says to pour it in the skimmer. Well we have found it is best to put it in a sock (yeah like you wear) and hang it in front the return. That way you KNOW when it is all dissolved and in the water.
Looking at your stuff the only one you need to use right now is the PH increaser. With your PH at 6.8 you need to bring it up to 7.5 for right now. See what the PH up is made of and post that here. We will be able to let you know how much to add.
Using Pool Math see how much CYA you need to bring your CYA to 30. You are going to have to buy that I am sorry to say.
Think of CYA as sun screen for your FC (Free chlorine). Without CYA your FC will be used up by the sun FAST.
You also need to find your best buy for liquid chlorine/bleach (same stuff just different %). What is your best cost and is easy to get to?
You need to get some FC in your pool ASAP and keep it at the recommenced level at all times or you risk algae growing in your pool.
SO here are your steps:
-PH-get it up to 7.5
-CYA-buy and add enough to get it up to 30
-FC-get it up to your level and keep it there.
That will get you set until your test kit gets there!
How are you feeling now? Too much? Just right? Let me know so I can tailor my style for you.