Sure, I'd be happy to provide you with some travel tips for your journey to Mogadishu, Berbera, and Kismayo.

Best Time to Visit:
The best time to visit Mogadishu and other parts of Somalia is during the dry months of December to March and July to September. There is minimal rainfall during these months, making it comfortable for sightseeing and outdoor activities.

Route and Accessibility:
Mogadishu has an international airport, Aden Adde International Airport, which is well-connected with major cities across the world. From Mogadishu, internal flights are available to Berbera and Kismayo. Buses and taxis are also available for local transportation, but service quality may vary.

Accommodation and Booking:
There are a variety of hotels available in Mogadishu, Berbera, and Kismayo, ranging from luxury to budget. Online booking is available on popular travel websites, but always double-check the safety, amenities and reviews before you book.

Clothing and Essentials:
Given the hot climate, lightweight, breathable clothing is advisable. Do carry a hat, sunscreen and sunglasses. As Somalia is a Muslim country, dress modestly, especially when visiting religious sites. An essential item to carry with you includes bottled water to stay hydrated.

Health and Safety:
Consider travel insurance for any unforeseen situations. Somalia has been prone to conflicts, so check the latest travel advisories. Vaccinations for diseases like Typhoid, Hepatitis A and B, Meningitis, and others are recommended. Always drink bottled water and avoid raw or uncooked food. Mosquito repellent is advisable to guard against malaria.

Local Etiquette and Respect:
Somalia is an Islamic nation and its customs should be respected. Dress modestly, particularly in public places and respect the Muslim traditions, particularly during the holy month of Ramadan. Try to learn a few phrases in Somali; it's appreciated by locals.