I dont under the ratio for example: if I just wanted to make soap with 16 oz lard and I wanted to us a 4:1 ratio with the lye 99% sodium hydroxide I dont know how many ounces of lye plus water to add to the lye crystals
I think you really need to forget about a 4:1 ratio. That isn't helping you. There is also some confusion as to the term 'lye crystals'. You need sodium hydroxide (the lye you purchased online), water and oils. That's it. So for example (I'm using soapcalc.net)
Section 1: type of lye. NaOH is selected by default - don't change it.
Section 2: weight of oils. Pounds is selected by default - change it to ounces. You want to use 16 ounces of lard, so you won't need to change anything. If you were to be making a bigger batch, you would then change the 16 to the correct weight of the oils you are using.
Section 3: water. I think to start with, leave the setting as is.
Section 4: superfat. 5% is selected by default. Don't change it or the fragrance amount.
Section 5: soap qualities, fats, oils. You want to make a 100% lard soap, so scroll down the oils list until you see lard (manteca) and double click that. Lard will appear in
Section 6: recipe oil list (make sure it is the lard that is there - the first time I add an oil to the list, it jumps to a different oil for some reason). You can delete anything from the oils list with the red - (minus) symbol on the left side of this section. % will be selected by default, so enter 100. Then go to
Section 7 and click on 'calculate recipe'. After that, click on 'view or print recipe'. A new window will open which will show you an overview of your recipe, and tell you how much water and lye you need. In this instance, you will need 6.08 ounces of water (plain, nothing added - preferably distilled water), and 2.15 ounces of lye.
Always add your lye to your water.
ETA: There is also at the very top of soapcalc a getting started section. I found it to be very helpful when I started.