Labdien, mani draugi! (Good day, my friends!)
So I'd like to start by stating that is post is neither comprehensive, nor exhaustive, it is a quick few resources that I think are excellent, even for beginners.
This is a template that I made myself, but it was inspired by some of the different sites I've visited (these will be linked below). I also experimented with different formats, and if this template doesn't work for you, then
I would strongly encourage you to try different layouts, and formats, as well! :)

For this template, the translations break-down like this:
- Tagadne, Pagātne and Nākotne, mean 'Present', 'Past' and 'Future', respectively.
- The columns extending down the page represent the Personal Pronouns used in the language, Es (I), Tu (You, informal), Viņš/Viņa (He/She, Singular), Viņi/Viņas (They, masculine/feminine Plural), Mēs (We) and Jūs (You, Plural and formal).
Links: One of the major difficulties with languages, that are rarer, is the limited amount of learning resources available, especially online. That being said, these are some of my personal favourites:
1) E-Laipa: A great website with excellent format, easy and fun; also, you can log-in and save your progress, and it is designed for various levels of fluency. It also has links to other sites that might be useful to you.
2) Cooljugator: This website is an absolutely brilliant concept, covering many different languages, it has long lists of verbs (and for some languages, nouns and/or adjectives). The format they use was the basis for my own informal template, so if you decide to use it, copying information onto the template will be easy!
3) There is a Latvian TV series with some episodes that have been shared on Youtube, I like to watch them because the game-show format gives clear, slower speech, coupled with written text of the questions being asked; this allows one to pause and closely examine the language in all its expressed forms.
https://www.youtube.com/watch?v=J7OWEwi5bPQ&t=117s
4) A couple of years ago, the burgeoning Latvian film scene took a novel written by a soldier in WW1 and made a movie adaptation. The film gives the oppurtunity to hear the Language in a more dynamic environment. I will share the trailer, and I encourage everyone to give it a watch!
Dvēseļu putenis (The Blizzard of Souls):
https://www.youtube.com/watch?v=qWN4qY55pJc
When I have more time I will add more links and resources, but for now, I hope you will find the information here useful for your learning. Prieka! ('Cheers!')