You have to be careful with this stuff because of its potency.Its not a good product to learn how to cap with.
For a product like this you'd want to cut it heavily ,so use large caps {0}that way if you have a slight dosage variation it will be minimized by the potency diluting cut.
Just make caps at 100mg since you will be learning.Here's a post I made on how to make caps.
You need a "cap em quick"
Size 'O' empty gel caps.
Scales accurate to .1 or .01 of a gram.
plus a filler powder of your choice
The first batch takes the longest, as you'll need to do some weighing and recording,but if you write down the weights and use the same filler,other batches will be a lot faster to make.
Using size "O" caps you'll need a filler,as each cap holds around 500mg and thats a bit much for one cap of AAS
Lets say you just want to make some caps with 30 mg of anavar
A "cap em quick" makes 50 caps in a batch.
So you get 50 empty gel caps and weigh them,write down the weight of these empty caps.
Then you place the 50 caps in your "cap em quick" and fill them with your chosen filler {e.g creatine or taurine}
Then weigh the fill caps,write down the weight
Subtract the weight of the empty gel caps from the amount of the fill caps .Subtract the weight of the Anavar 30mg x 50 {1.5 grams}
Now you now how much filler you need. write it down {should be around 22gm filler.}
Now weigh out your Anavar{1.5 g},you can add food coloring to it which can be of help in checking how well it is mixing.
Weigh out your filler and add both together ,mix{blend in}vigorously in a small bowl or cup with a folk before placing in a sandwich bag and shaking the hell out of it.
or for larger quantities you can mix in a clean coffee grinder.
Now put 50 gel caps in the "cap em quick" and start capping em.
Fill em up,you should have the exact amount of blended powder to top them up.