About a Travel Experience in California  {words in titles are capitalized}

Last month, me and my wife and I* went to California. It was my first time in the USA. We started in San Francisco, and afterwards, we went to Monterrey, Los Angeles, south Grand Cannyon and finished in Las Vegas.
We stayed 3 three weeks doing this trip.
San Francisco was my favorite city. The public transportation system*** is very good; we could ride a bike almost in everywhere and the cars respect it (in Sao Paulo it is very dangerous to do itso). The city is very beautiful and the people are well-educated. The only thing I didn't like was the weather, it was too cold for me! The winds coming in from the Pacific are freezing!
In Las Vegas, the weather was too hot, almost every day, the temperature reached 40 C ( I dont know in F ).
We visited almost every casinos there., We watched Cirque de Soleil and it was wonderful!

Glad to hear you had fun! I like San Francisco a lot too, but it's so expensive (even compared to New York)!

*The common structure is "<em>[other person]</em> and I", although technically, "I and my wife" is also correct.

**Numbers up to ten are spelled out in written English.

***Or "Public transportation is very good" (no "The" needed)