Answer
As a Jews we all believe that g-d gave us all 613 commandments at Mount Sinai and they obligate all of us, not just that also all the rabbinic decrees obligate all Jews.
It is true that many mitzvot are related to the temple and therefore are not relevant today and likewise many of the mitzva’s exists specifically in the land of Israel, yet as a whole the mitzva’s exist and are relevant to all of us.
Every single commandment is for our benefit; every single
mitzvah is good for us – not only spiritually, but physically as well. This is not the motivation for our performance of
mitzvot, of course. We perform them because they are Divine commandments, the will of G-d. The dietary laws, for example, are maintained as a Divine discipline, not because eating kosher food is healthful and beneficial to our bodies, but because
kashrut is a Torah law. But the fact is that it is healthful and beneficial.
Shabbat observance is designed to remind us of G-d as the Creator of the universe – but it is also good for us
In any case a Jew is still considered a complete Jew is even if he has sinned and not fulfilled all the mitzvot as he has a special neshomo soul yet one is to do the outmost to let hs neshomo get revealed via keeping all the mitzvot.
I understand form your question that you would like to be active in your Judaism, yet you are looking for guidance on which mitzvot to start and how to move forward. Therefore, I recommend you contact a local orthodox rabbi to help you though the steps of torah and mitzvot.
However, let me point out that There are certain mitzvot which as a beginner I recommend that you put your focus on keeping these mitzvot (however with the intention that eventually you will progress in your Yiddishkeit on to keeping all of the mitzvot.
Shabbat
Shabbat is special because G‑d has sanctified the day and made it unique, and Shabbat is special because we tap into that uniqueness by doing things we don’t ordinarily do, by performing rituals that make the shabbat experience singular for us. These rituals give Shabbat an aura that sets it apart from our workweek, and bring the holiness of shabbat into our lives.
Keeping the shabbat holy by lighting shabbat candles at the onset of shabbat making kiddush and being careful not to transgress the melachot of Shabbos
Kosher
What you eat becomes a part of you therefore it is so important that you only eat kosher foods.
According to Jewish law, the three basic elements of keeping kosher are:
- Avoiding any non-kosher animals (fish that don’t have fins and scales, land animals that do not both chew their cud and have cleft hooves, most birds);
- Avoiding eating meat and dairy together;
- Only eating meat that was slaughtered in a certain way, and drained of blood.
Taharat hamishpocho
The laws of
Taharas Hamishpacha (Family Purity) are an integral part of our religious faith and stemming as they do from our Torah, are not always fully understood by our mortal minds. The Infinite, after all, is not readily comprehended by the finite. The believing Jew maintains the practices of his or her faith whether or not he understands their reasons.
Family purity the beauty and specialty of the jewish family has always been depending on the extreme dedication of the Jewish mothers to this mitzvah.
In conclusion it would be smart to start off we these three mitzvot which shape the jewish people and then continue to advance further.
