Choose a short phrase then talk and sing the words repeatedly until you can sing it without looking at the music. Repeat this with the second phrase then put them both together, repeating from memory, keep doing this until you can repeat the whole song. When a large amount of songs need to be memorised for a theatrical show or opera performance, learn the ones you like the least first!
Find a partner
Try to find a partner who speaks the language you are learning, or at least someone else who would like to learn that you can practice with. There is no substitute for real conversation.
Word games are generally engaged as a source of entertainment, but have been found to serve an educational purpose as well. For instance, young children can find enjoyment playing modestly competitive games such as Hangman, while naturally developing important language skills like spelling. Solving crossword puzzles, which requires familiarity with a larger vocabulary, is a pastime that mature adults have long credited with keeping their minds sharp. Some interesting wordgames can be founf here on Eastoftheweb.
Mnemonics can be a good way to learn a language. Mnemonics generally works with words in a similar language group. For example, the English word “carpet” is “tapis” in French. Tapestry is an ornately woven carpet.
Make specialized vocabulary lists on topics that interest you, for example words relating to your career or hobbies. These are words that you are most likely to actually use in conversation, plus they may be more interesting for you to study. You can use some online services to learn dictionaries you’ve made, such as WordStep, which allows you to memorize new foreign words using exercises.