First cycle question

More than enough for a first cycle but you might want an ai on hand incase you get any estrogen related side effects.

Also do you know about needle sizes etc?

Intex Pharma TE-300 and Nolvadex are solid beginner options. For a 10-week cycle, 250-300mg testosterone weekly is common. Nolvadex 20mg daily for 3-4 weeks post-cycle is typical. One order of each should generally be enough,

Which product and doseage is best for a newbie to build muscle

Needle size and units per week and how to understand that measurement?

can anyone help with this please?

For a newbie, Testosterone Enanthate or Test Cypionate at around 250-500mg per week is a solid choice. It’s effective for muscle growth and generally well-tolerated. Start low and adjust as needed. Always consider proper diet, training, and post-cycle therapy (PCT).

Testosterone injections, use a 23-25 gauge needle, and 1-1.5 inch length.
f you're taking250-500mg per week, split it into 2-3 shots (e.g., 2 shots of 250mg each or 3 shots of 166mg).
To understand the measurement:

ml = 1,000 units

If your vial is 200mg/ml, and you want 250mg, you’ll draw