how to go to tsim sha tsui from silka fareast hotel

From your hotel, there is free shuttle bus to reach Mong Kok Langham Place. Then you can take the Tsuen Wan Line from Kong Kok MTR Station to reach Tsim Sha Tsui Station.
Since your hotel is near the Tsuen Wan Station, you can walk to reach that station to taket the Tsuen Wan Line to reach Tsim Sha Tsui Station directly.