New to this, my girlfriend & I want a baby 🥰

Hey yall , im Ki. Ive been on here a while but never interacted, just read! But now im here with exciting news, me and my girlfriend are ready for a baby ‼️‼️‼️ Im super excited, although im a mom of one daughter already (before i became lesbian) I want another child, and my girlfriend is alllllll for it. Ive been tracking my cycle for this moment for over 2years 🤞🏾 Now we begin the TTC process. I just want to know does anyone have any advice on where to

begin? I want to do insemination but i want to use a donor from her family.