Andy to the TFF and the wonderful world of fish keeping.
Good news is that you have not yet bought the fish
Plus you have found assistance by the bucket load (excuse the pun), if you wish to learn and are willing to listen in order to have a successful tank, as there are many experienced people here that will help you. Take a look at some of the other Newbies posts and what has already been shared and learnt along the way.
Re: needing some patience for the project, you need that too by the bucket load in order to be successful and ensure your fish survive. Otherwise you will find problem after problem with your aquarium.
Firstly, have you read the link that This Old Spouse posted for you?
Secondly, do not turn off your filter, it is needed to grow the beneficial bacteria (info., should be in the link already posted), and by turning your filter off and on you risk killing this bacteria and slowing down the process. Give it time the tank will settle.
What are your plans for the tank?
Really looking forward to looking at some starter fish
Please do not rush out and get fish, read the information already posted, as this is the quickest way to get the environment stable for the fish to survive.
Do you have a water test kit? I would recommend the API Freshwater Kit.
Can you add your location to your profile as it assist people advising you, as different countries have different equipment etc.
Once again,
, we look forward to sharing your journey. Oh, and pictures are always good to share too
Good Luck.