Hi @liam-murphy
I’m not sure if you are a subscriber or not?
If you are, you will have access to the Old Course and that has Vocab Units associated with it which go through lots of different things such as days of the week and months, saying hello - all sorts of things - including numbers - I think in units one and two.
When you get to the point where you are feeling ready (!) there is a route to getting a transcript (and translation) of the news reports on the BBC Cymru Fwy website - which is explained more here.
Going through these - initially before and more recently filling in any gaps afterwards - gave me a huge boost in understanding.
There is a little bit of an investment period in getting up to speed with ‘news bulletin vocab’ but I really felt it got me ‘on the ladder’ …from which point you just keep on keeping on 
Rich 