The Gita is one of the 3 pillars of modern vedanta. there are many translations in many different languages. Read in the language that you are comfortable with. Chanting in Sanskrit is ok, but if you do not study it in a language that you understand you won’t get the Krishna’s message in the Gita.
There are several ways to study the Gita;
First:
A daily reading of either a chapter or the 24 verses/ full chapter method. Many people do this in the morning as part of their morning daily deviations. Read with out commentaries. There are 700 verses in the Gita, the 24 verse/ full chapter method means you will compete 1 reading in 1 lunar month.
Second:
Study some commentary on the meaning of the Gita, but not as part of your daily reading.
Third:
Pick out those verses that have the most meaning to you. Make a list.
Fourth:
Memorize some or all of those verses.
Fifth:
If you are ambitious, memorize the entire Gita.
A daily reading will give you strength and after many readings a deeper insight into its subtle meanings.