So while that seedling is germinating, you need to get your bag or pot ready.
The first step is to decide what you need. There are benefits and drawbacks to both.
If you are going to move your plants around often I would recommend using pots. You will need to have a sturdy container that protects your roots.
Pots can also add a bit of flair to your grow if you want to invest in concrete or artful pots.
The drawback of a pot is that it gets easier to over water your plant, especially when they are still very small. So make sure that you use a nice aerated soil and that there is sufficient drainage holes in your pot.
Your plant can also become root-bound in a pot. The roots grow until they reach the pot side and then start winding around, until they are so bundled together that your plant is unable to take up nutrients from the soil.
Personally I love my bags. They help to make sure that I don’t over water, they look quite respectable and they help my plants not to become root-bound.
They also make sure my plant roots gets lots of much needed oxygen.
They main drawback of bags are that they are not as sturdy as pots. This means that you can break your roots if the soil moves while you move a bag around. So make sure these stay still as much as possible.
A second drawback is that bags tend not to last as long as pots. If you look after your bags properly you might get 4 or 5 years of use out of them, whereas pots will give you a lifetime of use if properly used.