Hi Jenm55,
You can ask questions anywhere and there will probably be answers. There are certainly no regular physical meetings involved with this website as the users here are all over the place. Most of us are scattered around the US while George and Sandy are in Australia. And as I answer your questions, it may seem like you are being thrown in the deep end of the pool. Just notice that higher revelation can become very complicated, so answering simple questions can involve explanations of linked concepts that you have not heard of yet.
Are the angels departed loved ones?
No, and in answering this question, I feel that I must briefly cover the beginning of human ascension. Our departed loved ones are either busy with their own ascension career on a set of training worlds light-years away (and are technically in heaven or on High, if that improves understanding), or are in a form of sleep and will awaken as part of a large group during a new dispensation of spiritual/celestial administration (like a rotation of responsibilities). The fate of people depends on their own spiritual growth, but quite a few are resurrected a few days after they are transported. It is also possible for people to linger on this planet a while if they are incredibly confused (like if they don't even know that life after death is possible), but these guys are eventually aided as well. Hell doesn't exist, so there is no need to worry about that, but it is possible for people to destroy their own soul and survivability if they are morally corrupt enough or simply refuse to let it grow. Growing one's soul simply involves working with God (most times unknowingly) during one's life, but these co-creative efforts can be more understood with practice. And this partnership with God is a huge topic that I dare not get into with this first post, but you can certainly ask about it. The next group of worlds people experience are called the mansion worlds (there are seven of them). The first world is usually called Mansonia. The next phase of existence, between matter and spirit, is called morontia, and it is a form of energy organization. This substance can be created by the Master Physical Controllers and the Morontia Power Supervisors when the revolutions of the primary units of matter are modified and energy associations transformed. The morontia realms are the local universe liaison spheres between the material and spiritual levels of creature existence.
Angels are known as the Daughters of God, and come from the Infinite Spirit. Some examples include: Seraphim, Cherubim, Sanobim, Omniaphim, Supernaphim, Seconaphim and Tertiaphim. There are probably more I am forgetting and a million more unrevealed. Everyone does have guardian angels (Seraphim being aided by Cherubim and Sanobim pairs), and they are assigned in accordance with human intelligence, spirituality, and destiny. A large portion of individuals are watched over in groups, but after enough human development, it is possible to gain personal guardians (known as Destiny Guardians). These angels will actually help you (and you them) throughout your ascension career, so they will become companions of yours for a very long time.
How do I communicate with them?
Your guardians are always aware of your activities and thoughts, so communicating to them is incredibly easy. Receiving an obvious response from them is not as easy as their job is to guard you and facilitate the ministry of God in your mind, but it is possible for them to manipulate your surroundings if they deem it helpful for your growth. The easiest way to communicate may be for you to decide on a specific dream interpreting system, like a specific book about dreams, which the angels can then use to manipulate your dreams. I haven't tried this though, so I would ask around if anyone else has had success in this regard.
Are they telling me to become stronger in my faith?
Number prompts are usually used as spiritual wake up calls, so this may be the case. But the ones who are usually involved with such things are not the angels, but the primary and secondary midwayers.
Are they encouraging me to change bad health habits?
All I can say is that it is better to have good health. I don't know what your habits are.
Most of the terms I use which you are not familiar with are in the Urantia Book, which is a public resource and can be downloaded for free. Anything that is not covered in that huge book is either covered by our teachers on High through the transmitters/receivers (sort of like certified channelers) serving the Teaching Mission, or is simply information not available yet for humans.