The first week is usually spent choosing an app, watching videos about learning, and memorising colours. None of that survives contact with a real conversation. Here is a week that does.
Days one and two: sounds and the script
Learn how the language is written and how the letters sound. If it uses a different script, start it now — postponing it means learning the wrong pronunciation first and unlearning it later. Say everything out loud from the first day. Silent study builds a reading habit and a speaking block.
Days three and four: the survival sentences
Hello, please, thank you, sorry, I do not understand, can you repeat that, I am learning, how do you say this. Ten sentences, complete, memorised, said aloud until they are automatic. These are what carry a real first exchange. Grammar cannot help you here and vocabulary lists cannot either.
Days five and six: you, in four sentences
Prepare how you say who you are, where you are from, what you do and why you are learning the language. You will be asked all four in any first conversation, forever. Record yourself saying them. Listen once, fix the worst thing, and move on.
Day seven: use it badly
Say something to a real person, or to a tutor, or out loud to yourself about your own day. It will be poor and that is the point — the goal of week one is to prove that producing the language is allowed. Then decide your fixed daily slot for week two. The habit, not the content, is what week one is really for.
Skip the colours, the animals and the grammar tables. Sounds, ten sentences, four facts about yourself, and one act of speaking — that is a first week you can build on.