I personally think that practicing writing them on paper helped me learn them a lot better. I just did a search online to find hiragana/Katakana writing practice sheets and printed them out. There's a ton of different options, so you can search to find some that look good to you, but these are the two I ended up using:
I also supplemented that with practice on my phone using Maru Japanese and Kana (both iPhone apps); neither are perfect, but I got good use out of them. I haven't used Renshuu's hiragana/Katakana practice, so I don't know how it compares.
There are kana worksheets here on renshuu too! I haven't tried them, I learned kana from the quizzes here and quick draw game. Shortly moved on to grammar and vocabulary. Honestly, you don't need to overthink it. The way to do it is practice.
The quick draw game helped me a ton, so I would recommend that. Just start with the first level of difficulty and repeat it til you have the stroke order down. Then do the second level of difficulty. The fourth is good for practice once you are good, but if you are just starting i dont recommend it. Go for the slowest time limit if you are doing it for practice, but if you are playing for fun anything will do. I hope this helps anyone who wants to lear kana better!