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If you're going to do maths in a serious way, it's worth spending half an hour making sure you can read and write the whole Greek alphabet, especially the lower case letters. Some of them you will know already, probably at least α, β, γ, δ and ε (alpha, beta, gamma, delta, epsilon), but after that it may get a little hazy. They are all used in maths, though the ones that are very similar to English letters are less common for obvious reasons.
The hardest ones to write are ζ (zeta) and ξ (xi). Make sure you can write ξ in particular, with the right number of loops and the right way round. And make sure you can distinguish φ (phi; anticlockwise circle from the top, then straight down and carry on) from ψ (psi; a "u" shape and a separate vertical line) - this is a mistake even maths graduates make. And the English names phi, chi, psi, and xi rhyme with "my", not with "me", another common mistake.
Watch out for "false friends". ρ is rho, which corresponds to "r" not "p"; the Greek "p" is π. Likewise ν (nu) corresponds to "n", not "v". And epsilon (ε) and upsilon (υ) have similar names but look completely different.
Learning the Greek alphabet will help you in other parts of your life, too. For example, as I write this, the latest Covid variant is omicron (ο); it was briefly called the "nu (ν) variant", but the scientists presumably decided that would be confused with "new", and the next letter, ξ, was not used, perhaps because it's too hard to pronounce (or write).
If you're of an optimistic turn of mind, you might observe that omicron is about two thirds of the way through the Greek alphabet, and deduce that with any luck we're at least two thirds of the way through the covid pandemic now. On the other hand, there are plenty of Russian, Hebrew and Arabic letters to fall back on if necessary, not to mention tens of thousands of Chinese characters, so don't get your hopes up.
If you like learning to music, this song is a great way to drill the Greek alphabet into your brain, despite the wrong pronunciation of ξ. Unfortunately it's all upper case, though, so you'd better watch a second, much more sedate video too. (You can ignore the differences between ancient, biblical and modern Greek for these purposes).
When you're done, do contact me for some maths tutoring, though I'd appreciate it if you'd use an alphabet we're both used to.
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